- Home
- EPCRA Tier II
- Oklahoma
Oklahoma Tier II reporting: how and where to file
Due to the DEQ by March 1; the DEQ passes the reports to the LEPCs and fire departments. $15 per hazardous substance and $30 per extremely hazardous substance, or $12 per facility for oil and gas production sites and agricultural chemical dealerships; at most $1,000 per company per year. Card payments add a 2.25% merchant fee and a $2 portal fee.
From Oklahoma Department of Environmental Quality (DEQ), read on the state's own page · September 26, 2026
What Oklahoma asks for
Each point below is followed by the state's own words, so you can check it against the source.
Deadline
Due to the DEQ by March 1; the DEQ passes the reports to the LEPCs and fire departments.
“Facilities must provide an annual inventory report to the Oklahoma Department of Environmental Quality in the form of a Tier II Report due by March 1 of each year.” source
“Facilities electronically submit Tier II reports each year, and DEQ distributes them to Local Emergency Planning Committees (LEPCs) and fire departments statewide.” source
Fees
$15 per hazardous substance and $30 per extremely hazardous substance, or $12 per facility for oil and gas production sites and agricultural chemical dealerships; at most $1,000 per company per year. Card payments add a 2.25% merchant fee and a $2 portal fee.
“Oil and Natural Gas Production Facilities: $12.00/ reported facility Agriculture Chemical Dealerships: $12.00/ reported facility Facilities under any other NAICS code: Hazardous Substance (as defined in 40 CFR Part 370): $15.00/ substance Extremely Hazardous Substance (as defined in 40 CFR Part 355): $30.00/ substance *Maximum fee charged for a single reporting year is $1,000.00 per company.” source
“Effective July 1, 2022, the Oklahoma Department of Environmental Quality will begin assessing customers a merchant fee in the amount of 2.25% of the amount due if paying via credit or debit card.” source
“Additionally, a portal fee of $2.00 will be charged for each transaction paid by a credit or debit card.” source
The federal rule underneath
EPCRA section 312 applies to a facility that the OSHA HazCom Standard requires to keep an SDS for a hazardous chemical present at any one time at or above 10,000 lb, or at or above 500 lb or its threshold planning quantity, whichever is lower, for an extremely hazardous substance (40 CFR 370.10(a)). The report covers the previous calendar year and is due March 1 (40 CFR 370.45). Where Oklahoma's rules above are stricter, they apply on top.
The full federal picture, Tier I versus Tier II, counting and penalties, is on the EPCRA Tier II hub. The list that feeds it is the chemical inventory.
HazComFast keeps each jobsite's chemical quantities next to its safety data sheets and exports the Tier II data as an Excel workbook, a CSV file and a PDF summary.
Oklahoma Tier II FAQ
When is Tier II due in Oklahoma?
Due to the DEQ by March 1; the DEQ passes the reports to the LEPCs and fire departments.
Does Oklahoma charge a Tier II fee?
$15 per hazardous substance and $30 per extremely hazardous substance, or $12 per facility for oil and gas production sites and agricultural chemical dealerships; at most $1,000 per company per year. Card payments add a 2.25% merchant fee and a $2 portal fee.
More on Oklahoma
Tier II in other states
Sources
- oklahoma.gov/deq/divisions/land-protection/chemical-reporting-and-preparedness/tier-ii/tier-ii-reporting.html
- ecfr.gov/current/title-40/part-370
Oklahoma's requirements read on the state's own page on September 26, 2026; 40 CFR part 370 read on the eCFR the same day. States change portals and fees; confirm with Oklahoma Department of Environmental Quality (DEQ) before you file. General guidance, not legal advice.
Get the Binder in Order Before the Inspector Arrives. Are You Ready?
OSHA does not give advance notice of inspections (29 CFR 1903.6). Get the binder in order before the opening conference, not during it.
Serious Violation
$16,550
per violation (max)
HazComFast Pro
$199/mo
10 jobsites, unlimited chemicals, unlimited workers
New sign-ups are paused. The free tools below need no account, and customers can log in as usual.
Your account keeps working as usual. Cancel anytime.